The Grand Theft Auto 5 creepy sewer laugh mystery is finally solved and explained.

Grand Theft Auto V players have long been intrigued by eerie phenomena, including unsettling sewer laughs in Los Santos. Recently, this mystery was solved, revealing a clever nod to GTA 4’s Ratman urban legend. Rockstar Games incorporated this fan-made myth as an Easter egg, linking the creepy laughter to the Ratman sightings in Liberty City’s subway tunnels.